He's not the only one. Here's a documentary about a boy who uses the same technique http://www.youtube.com/watch?v=qLziFMF4DHA

I have once seen tests in some popular science tv show. They blindfolded a few people and let them walk in front of a door (or sth like that) to check if they'll stop before they reach it, and somehow they managed to do it. We can use echolocation by nature, we just don't develop this skill.